ImageGear for C and C++ on Windows v19.7 - Updated
Save Annotations
User Guide > How to Work with... > Annotations > New Annotation API: ArtX > How to... > Save Annotations

Once the end users of your application have created some marks, they have the following options to save them:

.ART files can be read by any other application developed with ImageGear. In addition, the .ART file format is supported by the Imaging for Windows application (from Kodak) supplied with Windows.
ImageGear Vector Component is required and should be attached for working with PDF annotations. See Attaching Components.